.wxClass{

    width:250px;
    height:230px; 
  
    background-image: url(../../../../images/wx.PNG);
    background-size:250px 230px;
 
}
.zfbClass{

    width:250px;
    height:230px; 
  
    background-image: url(../../../../images/zfb.PNG);
    background-size:250px 230px;
 
}